Lost Ridge Trail #9W25
ElevationAscent: 0' 0 m
Descent: -612' -186 m
High: 6,308' 1,923 m
Low: 5,696' 1,736 m
GradeAvg Grade: 12% (7°)
Max Grade: 30% (17°)
Popular runs nearby
Hawkins Ridge Loop
11.2 mi 18.1 km • Loop • 2,855 ft Ascent 870.34 m Ascent
Crystal Lake to Mt. Islip Loop
9.9 mi 15.9 km • Loop • 2,687 ft Ascent 819.03 m Ascent
Cooper Canyon Falls Out and Back
3.8 mi 6.2 km • Out and Back • 790 ft Ascent 240.74 m Ascent
San Antonio Falls
1.3 mi 2.1 km • Out and Back • 258 ft Ascent 78.63 m Ascent
Icehouse to Cucamonga and Etiwanda Peaks
15.4 mi 24.8 km • Loop • 4,422 ft Ascent 1347.84 m Ascent
10.3 mi 16.6 km • Loop • 1,092 ft Ascent 332.83 m Ascent
Navigate on-trail with our free app
“This is a useful trail connecting Crystal Lake with Deer Flats Group Campground.”— Alan Coles
The trail starts at the lower campsite at Deer Flat, then descends through an area of chaparral burned in the Curve Fire (2002). As it descends a steep section with steps, it enters a forest of bigcone spruce, live oaks, sugar and Jeffrey pines ending at the junction with the Lake Trail #9W27. From there, it is 0.5 miles to Crystal Lake (straight) or one mile to the campground and store (left).
This trail is a very useful link for making a loop run inside of the Crystal Lake Basin and is an ideal place for campers looking for a nice walk.
The "lost" ridge is actually a part of Islip Ridge that slid down in a massive slide creating Deer Flat and Crystal Lake.
Run this trail?
We need help with the following missing trail information:
Is something wrong? Let us know. Have photos to share? Help fellow runners know what's here.